• Rentoraa@lemmy.world
      link
      fedilink
      arrow-up
      17
      ·
      1 month ago

      My time has come.

      I’m what the aerospace industry calls a “surface enhancement engineer.” A fancy way of calling me a peener. I mostly work with CNC air blast shot peening machines but the principle is essentially the same as a ball peen hammer.

      Basically, hitting metal with hard ball causes little dimples to form on the surface of your work piece. Hit it a shit load of times and you get dimples all over. At the end of the day all those dimples help prevent stress fractures from forming.

      • Ridgetop18@lemmy.blahaj.zone
        link
        fedilink
        arrow-up
        4
        ·
        1 month ago

        Soft face is exactly what it says, it’s got soft rubber faces, basically just a shrunk down rubber mallet. Use it on things you don’t want to leave marks on.

        Double peen is basically just a soft face except one side is like a hard epoxy like material. Harder than the rubber side, still softer than a metal head would be.